Reagent holder



FIG. 1 is a perspective view of a reagent holder showing our new design;

FIG. 2 is a first side plan view thereof;

FIG. 3 is a opposite second side plan view thereof;

FIG. 4 is a first end view thereof;

FIG. 5 is a opposite second end view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown on the top and bottom of the reagent holder are included for the purpose of illustrating portions of the reagent holder that forms no part of the claimed design. 

The ornamental design for a reagent holder, substantially as shown and described. 